差壓（DP）流量計(jì)是當(dāng)今使用的流量測(cè)量產(chǎn)品形式。ABB提供了大量的流量計(jì)及差壓元件，以適應(yīng)各應(yīng)用領(lǐng)域的需求。這些流量計(jì)包括：緊湊型孔板流量計(jì)、均速管流量計(jì)、文丘里管、楔形流量計(jì)、水下流量計(jì)、孔板、孔口載體組件、噴嘴流量計(jì)及濕氣測(cè)量表。所有這些流量計(jì)的材質(zhì)、焊接及NDE（無(wú)損檢測(cè)）均獲得了認(rèn)證。ABB還提供結(jié)構(gòu)緊湊的DP流量計(jì)，用于將多個(gè)部件整合成一個(gè)容易安裝的流量計(jì)組件，以優(yōu)化并保持整體性能及可靠性。ABB提供的DP流量計(jì)系列是市場(chǎng)上zui全面的，包括改良的測(cè)量性能，這樣的測(cè)量性能能夠根據(jù)具體應(yīng)用進(jìn)行定制。

• 差壓元件全面，凈壓力損失小，有助于降低能源成本，減少碳足跡
• 為條件惡劣的應(yīng)用環(huán)境設(shè)計(jì)了堅(jiān)固可靠的解決方案，實(shí)現(xiàn)了以往所不能實(shí)現(xiàn)的流量測(cè)量
• 緊湊型DP流量計(jì)采用綜合性管線，只需在管道上開(kāi)一個(gè)孔，便可實(shí)現(xiàn)實(shí)時(shí)測(cè)量。這樣就降低了總安裝成本，無(wú)需再使用取壓管、法蘭，也無(wú)需再進(jìn)行改裝管道，安裝簡(jiǎn)單

Compact DP Flowmeters
Flow Tubes	Orifice Plates
Orifice Assemblies	Other DP Products

	FPD500 OriMaster	FPD510 IOMaster	FPD550 PitotMaster	FPD570 WedgeMaster
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Flowmeter type	Compact orifice	Compact integral orifice	Compact averaging pitot	Compact wedge
Pipe size range mm （in.）	25 to 300 （1 to 12）	15, 25, 40 （½ , 1, 1½）	100 to 600 （4 to 24）	25 to 150 （1 to 6）
Pressure drop	High	High	Low	Medium
Element removal	l	l
Viscous liquids				l
Suitable for short upstream lengths				l
Upstream/downstream ipe included	No	Option	No	No
Installation cost	Low	Low	Very low	Low
Low flowrates		l
Low Re				l
Wear resistance				l
Flow calibration	option	l	No	l
Bidirectional	No	No	Option	Option

	VTC	WM-Series
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Description	Classical Venturi	Wedgemeter
Relatively Clean Liquids	l	l
Dirty Liquids	l	l
Viscous Liquids		l
Relatively Clean Gas/Vapour	l	l
Dirty Gases/Vapours	l	l
Steam	l	l
Pipe Size Range mm （in）	50 - 1200 （2 - 48）	15 - 600 （½ - 24）
Relative Cost	High	High
Accuracy % rate
Calibrated	≤0.5	≤0.5
Uncalibrated	1.5	3
Pressure Drop	Low	Low

	TORBAR	NOZ	FCD	CRN
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Description	TORBAR	Nozzles	Flow Conditioner	Restriction/Pressure Drop
Relatively Clean Liquids	l	l	l	l
Dirty Liquids
Viscous Liquids
Relatively Clean Gas/Vapour	l	l	l	l
Dirty Gases/Vapours
Steam	l	l	l	l
Pipe Size Range mm （in）	15 - 5000 （½ - 200）	50 - 600 （2 - 24）	50 - 600 （2 - 24）	50 to 1000 （2 to 40）
Relative Cost	Low/Medium	Medium	Medium/High	High
Accuracy % rate
Calibrated	≤0.5	≤0.5	N/A	N/A
Uncalibrated	1.5	2	N/A	N/A
Pressure Drop	Low	Medium	High	As required

	CSE	CQC/CCL	ESE/SSE
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Description	Concentric Square- Edged	Quarter-Circle/ Conical Entry	Eccentric/Segmental
Relatively Clean Liquids	l	l
Dirty Liquids			l
Viscous Liquids		l
Relatively Clean Gas/Vapour	l	l
Dirty Gases/Vapours			l
Steam	l
Pipe Size Range mm （in）	50 to 1000 （2 to 40）	25 to 100 （1 to 20）	100 to 1000 （4 to 40）
Relative Cost	Low	Low	Low
Accuracy % rate Calibrated Uncalibrated	0.5 1.5	0.5 3	N/A N/A
Pressure Drop	Medium	Medium	Medium

	OCA	OFA	OMR	1330L
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Description	Orifice Carrier Assemblies	Orifice Flange Assembly	Meter Run	Flow Element
Relatively Clean Liquids	l	l	l	l
Dirty Liquids	Some designs	Some designs	Some designs	Some designs
Viscous Liquids	Some designs	Some designs	Some designs	Some designs
Relatively Clean Gas/Vapour	l	l	l	l
Dirty Gases/Vapours	Some designs	Some designs	Some designs	Some designs
Steam	l	l	l	l
Pipe Size Range mm （in）	25 - 1000 （1- 40）	25 - 1200 （1 - 48）	15 - 1200 （½ - 48）	15 - 40 （½ - 1-½）
Relative Cost	Low-medium	Low-medium	Low-medium	Low-medium
Accuracy % rate
Calibrated	N/A	N/A	0.5	0.5
Uncalibrated	1.5	1.5	1.5	2.0
Pressure Drop	Medium	Medium	Medium	Medium